§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US3739778A Expired / Lapsed US ⏱️ 0.0 years remaining

Catheter introduction system

Assignee: CR Bard Inc
•
Filing: 1971-08-12
•
Granted: 1973-06-19
•
Expires: 1991-08-12
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A needle and catheter combination for intravenous or supra-pubic use wherein a plastic catheter is mounted on a connector assembly including a first hub which is connected to a second hub by means of a short rubber tube adapted to be bent laterally and to be resealably punctured by a needle (having a hub and a plug) which extends initially through the first hub and catheter with its point projecting from the distal end of the latter. After introduction (e.g. venipuncture) the needle is withdrawn leaving the catheter in the vein or other body cavity; the needle hole through the side of the rubber tube closes and the second hub may then serve as an adapter for connection to an infusion set or drainage receptacle, or an elongated second catheter with adapter may be introduced through the connector assembly and catheter. When the second catheter is used the first catheter may be left in place or may be withdrawn to leave only the second catheter in the vein or other cavity. The needle hub may be opened by removing the plug to permit observation of flashback, and the needle may have a lteral opening in register, initially, with the lumen of the rubber tube to permit injection of liquid immediately upon venipuncture, before removal of the needle.

Inventors

  • 👤 M Monestere
  • 👤 F Prunier

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 16:04
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0111

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 106 words
A needle and catheter introduction combination comprising a plastic catheter and catheter hub, a connector assembly including a flexible tubular member of self-sealing material and a second hub, the catheter hub being attached at its proximal end to the distal end of said assembly, and a needle having a point adapted to pass through a wall of the flexible member and through the lumen of said catheter to project beyond the catheter tip, the needle being mounted in a needle hub providing positioning means for limiting the relative axial movement of said needle and catheter when the needle is passed through said wall and said lumen.
Claim 2
Dependent Claim 106 words
A needle and catheter introduction combination comprising a plastic catheter and catheter hub, a connector assembly including a flexible tubular member of self-sealing material and a second hub, the catheter hub being attached at its proximal end to the distal end of said assembly, and a needle having a point adapted to pass through a wall of the flexible member and through the lumen of said catheter to project beyond the catheter tip, the needle being mounted in a needle hub providing positioning means for limiting the relative axial movement of said needle and catheter when the needle is passed through said wall and said lumen.
Claim 3
Dependent Claim 58 words
A needle and catheter introduction combination according to claim 1 in which the needle positioning means includes a needle hub and a cylindrical guide shield extending distally from said needle hub, said guide shield being cut away on one side to permit the tube to extend laterally wnen the needle is passed through said wall and said lumen.
Claim 4
Dependent Claim 29 words
A needle and catheter introduction combination according to claim 2 wherein said guide shield is cut away on the side corresponding to the bevel side of the needle point.
Claim 5
Dependent Claim 27 words
A needle and catheter introduction combination according to claim 2 wherein the needle is provided with a lateral opening intermediate the needle hub and the needle point.
Claim 6
Dependent Claim 27 words
A needle and catheter introduction combination according to claim 4 wherein said lateral opening is on the side corresponding to the bevel side of the needle point.
Claim 7
Dependent Claim 28 words
A needle and catheter introduction combination according to claim 1 which includes an elongated second catheter and an infusion hub on the proximal end of said second catheter.
Claim 8
Dependent Claim 33 words
A needle and catheter introduction combination according to claim 6 which includes a protective sleeve enclosing said second catheter and hub, aNd means removably securing an end of said sleeve to said assembly.
Claim 9
Dependent Claim 48 words
A needle and catheter introduction combination according to claim 6 wherein said second catheter is adapted to be advanced through said plastic catheter, following venipuncture and removal of the needle, and wherein said infusion hub is engageable with the connector assembly when the second catheter is so advanced.

References Cited (Backward Citations)

US3348544A Cited
US3225762A Cited
US3313299A Cited
US3297030A Cited
US3399674A Cited
US3459184A Cited
US3547119A Cited
US3585996A Cited
US3599637A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-06-18 1976-12-18 1977-06-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-18 1980-12-18 1981-06-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-18 1984-12-18 1985-06-19 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag